Internal-combustion engine.



E. J. WAGNER.

INTERNAL COMBUSTION ENGINE APPLICATION FlLED AUG-20, 1914.

, 2 SHEET-SHEETI- WITNESSES IN V E N TOR g g 97 7 .Ernesi JWaynar 0 a? By Patented J fine 6, 1916.

E. J. WAGNER.

INTERNAL COMBUSTiON ENGINE.

- APPLICATION FILED AUG-20. 1914- 1 1 86,350. Patented June 6, 1916.

2 SHEETS-SHEET 2- WIT/M8858 E 2 f r 77268 7249i Z6 By 2. 3.1mm

ATTORNEYS ERNEST JOSEPH WAGNER, F PENSACOLA, FLOR-IDA.

INTERNAL-COMBUSTION EKGINE.

Application filed August 20, 1914. Serial No. 857,877.

To all whom it may concern: I

Be it known that I, ERNEST J. WAGNER, a citizen of the United States, and a resident of Pensacola, in the county of Escambin and State of Florida, have invented a new and Improved InternaLCombustion Engine, of which the following is a full, clear, and exact description.

My invention relates to an internal combustion engine and which has for its object to provide means for scavenging the cylinder in an internal combustion engine at the termination of the power stroke and simultaneously opening the inlet port and" recharging the cylinder with a combustible mixture. The desired result is obtained with an .'1uxiliary piston which moves quickly when the main piston approaches the end of the power stroke to remove the gases of combustion from between the main piston and the auxiliary piston, the new charge of combustible mixture being drawn in between the auxiliary piston and the cylinder head. as the auxiliary piston moves away from the said cylinder head. The combustible mixture is compressed as the auxiliary and main pistons are moved on their return stroke. W'ith the improvement much more horse power is obtained relatively to the weight of the engine than is possible with the usual type four cycle engine, it being possible to operate any engine without mechanically operated Valves.

Additional objects of the invention will appear in the following specification in which the preferred form of'my invention is disclosed.-

In the drawings similar reference characters refer to similar parts in all the views in which Figure '1 is a transverse sectional elevation of the engine; Fig. 2 is a side elevation in section showing the position of the pistons at the commencement of the power stroke; and Fig. is a sectional elevation similar to that shown in Fig. 2, but with the pistons in the positions which they assume at. the end of the power stroke.

By referring to the drawings it will be seen that the engine is provided with a cylinder 5 which may have a water jacket 6, the cylinder 5 having a head 7. In the cylindcr 5 there is a main piston 8 and an auxiliary piston'fhthc cylindcrf'ibeing provided with a by-pass 10 around the auxiliarvpiston 9 when the auxiliary piston l) is in the Specification of Letters atent.

Patented June 6, 191%.

position which it assumes when the main piston is about to move on the power stroke.

The ports 11 leading to the chamber 12 also serve as a by-pass around the auxiliary pis-' ton 9. An inlet port 13 communicates with this chamber 12, the inlet port 13 being normally closed by a valve 14: which is held yieldingly on its seat by the spring 15 in the customary manner. An igniter 16 also communicates with the interior of the chamber 12. Spaced from the cylinder head 7 the cylinder is provided with an exhaust 17.

As has been stated, the cylinder 5 not only has a main piston S but an auxiliary piston 9, the rods 18'being disposed through openings 19 in the auxiliary piston 9 and being held in place by the shoulders 20 which engage the underside of the auxiliary piston 9 and by the nuts 21 which mesh with the threaded terminals 22' of the rods 18 and which seat against the bottom of the re-- cesses 23 in the auxiliary piston 9. The rods 18 extend down through openings 2i in the main piston 8 and have elongated openings 25 in which are disposed the shaft sections 26, these shaft sections 26 having annular grooves 27 in which fit the rods 18 at thesides of the elongated openings 25. The shaft sections 26 are journaled in bearings 28 in the frame 29, disks 30 being secured to the shaft sections 26, these disks 30 being spaced apart. A crank pin 32 extends across from one of the disks 30 to the other disk 30 and this crank pin 32 is journaled in the bearing 31 at t-he lower end of the piston rod 33, the bearing 31 having shoulders 3i which engage the inner sides of the disks 33 to hold the disks spaced apart. The piston rod 33 is articulated within the bottom of the main piston 8 in the customary manner, the piston rod 33 having a bearing 36 in which is journaled a pin 35 secured to the main piston 8.

\Vith the construction which has been described. the main piston S is adapted to rotate the shaft sections 26 in a manner readilv understood. Onthe outer surfaces of the disks 30 there are cam grooves 37 in which are disposed for moving the rollers 38 on the studs 39 carried by the lower ends of the rods 18. As best shown in Figs. 2 and 3 one side 40 of each of the cam grooves is curved around the axis of the bearings 31, the other side 41 of the cam groove 37 being disposed at the other side of the axis of the bearing 31 and being substantially straight.

It will also be seen that one end of the cam groove 37 is disposed adjacent the axis of the shaft sections 26 while the other end of nited, .the pressure being substantially the same at each side of the auxiliary piston 9' because of the by-pass 10 and the passage 11 to the chamber 12. It will, therefore, be

;seen that the pressure will be exerted against the rnain piston 8 and that this main. piston 8 will be forced downwardly to turn the shaft sections 26 by the means which has been described. lVith the downward movement of the main piston 8 the rollers 38 will move into the straight portion 41 in the cam .groove 37 and until the last part of the Having thusdescribed mylinvention l' downward stroke of the main piston 8, the rollers 38 will not be moved downwardly to draw down the auxiliary piston 9 by means of the rods 18, but as the main piston 8 is.

about to complete its stroke, the continued movement of the rods 38 in the straight portion of the cam groove 37=will serve to draw down the auxiliary piston 9 quickly to force 1 through the exhaust port 17, the products of coinbustion, a new charge being drawn into the upper portion of the piston 5 by the suction which is caused as the auxiliary pi,

ton 9 moves downward. As the rollers 38- pass the straight portion 41 of .the cam grooves 37 to the position shown in Fig. ,3

of the drawings, the rollers 38 will 'then' move in 'the curved portion 40 of the cam grooves and in. this way, the .auxiliaryp'iston 9 will be forced upward at substantially the same speed as theinain piston 8," until" the main piston .8 and the auxiliary piston 9 are disposed as shown in F ig. 2 of 'the drawings andwith the:emnbin tihle mixtum-compressed around both sides of the auxiliary piston 9 when the charge is again ignited in the manner described. I

claim as new and'desire to secure by Letters Patent:

1. In an internal "combustion engine, a

cylinder a main piston for reciprocatingin the cylinder, a pitman articulated to the main piston, two shaft sections spaced apart, two disks, one secured to the end. of each shaft section, a crank pin connecting the disks to which the pitman is articulated, there being two openings in the main pistonv separated by the connection. of the pitmanwith the piston, an auxiliary'piston in the cylinder, two rods connected with the auxiliary piston and one extending through each opening in the main piston, andcam means at the outer sides out the disks for operating the rods.

2. Inan internal combustion engine, a

cylinder, 2. main. piston for reciprocating in the cylinder, apitmanarticulated to the main piston,ftwo shaft 'sections' spaced apart, two disks, one secured to the end of each shaft section, a crank pin connecting the disks to which the pitman is articulated, there being two openings in the main piston, an auxiliary'piston in the cylinder, two

rods'connected with the auxiliary piston and one extending through-eachopening in the main piston, the rods:having slots through which the shaft sections extend, and cam means'at the outerside of the disks for operating the rods.

3, In an-intcrnal combustion'engine having a cylinder with a head, a main piston with an. opening for reciprocating in the cylinder, an=auxiliary pistpndisposed between the main piston andthehead, a shaft having an annular groove, a crank 01143116 shaft, a piston rod connectingthe main"piston with the crank, therebeiug a cam groove in amember of the crank, a rod connected --with the auxiliary piston, the last mentioned rod having an opening-gin whichthe shaft at the annular groove; is'disposed, the

last mentioned. rod extendingwthrough the opening iii-the main piston and, a cam. {member ion'the lastmentioned'rod-'ffor moving f in thev can), groove. In testimony name to this specific'atifoninthe presence'of v the two subscribing witnesses.

' ERNEST JOSEPH.,.WAGNER.,.

Witnesses: Q

-,Cnannas F. CLARnsoN, ANNIE M. CMBKSONL Gomez! at this patent my be obtained for ave cents each, by addressing the fflommluiener (a Patents,

"' .WeshingteznE-fi.

whereof, 15am signed I its 

